EP2820745A1 - Machine électrique tournante - Google Patents

Machine électrique tournante

Info

Publication number
EP2820745A1
EP2820745A1 EP13706265.9A EP13706265A EP2820745A1 EP 2820745 A1 EP2820745 A1 EP 2820745A1 EP 13706265 A EP13706265 A EP 13706265A EP 2820745 A1 EP2820745 A1 EP 2820745A1
Authority
EP
European Patent Office
Prior art keywords
head cover
rotor
winding head
sensor
sensor track
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP13706265.9A
Other languages
German (de)
English (en)
Other versions
EP2820745B1 (fr
Inventor
Michael Bulatow
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Continental Automotive GmbH
Original Assignee
Continental Automotive GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Continental Automotive GmbH filed Critical Continental Automotive GmbH
Publication of EP2820745A1 publication Critical patent/EP2820745A1/fr
Application granted granted Critical
Publication of EP2820745B1 publication Critical patent/EP2820745B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
    • H02K3/51—Fastening of winding heads, equalising connectors, or connections thereto applicable to rotors only
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21—Devices for sensing speed or position, or actuated thereby
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information

Definitions

  • the present invention relates to a rotary electric machine, in particular an electric motor or a generator. Further, a method of manufacturing a rotary electric machine is disclosed.
  • rotational angle sensors or rotor position sensor (English “rotor position sensor”, abbreviated RPS) installed in such electric or hybrid vehicles, detect the speed or rotation angle or rotor position and are usually designed as inductive sensors.
  • RPS rotational angle sensors or rotor position sensor
  • Such a sensor receives a signal from a sensor wheel, which is attached to the rotor and rotates with it.
  • DE 10 2005 062 865 A1 discloses such a sensor, in which the sensor faces the arranged on a co-rotating encoder wheel sensor track in the axial direction.
  • such an arrangement includes a large number of individual components such as spacers, retaining elements, encoder wheel, each bring manufacturing and installation tolerances.
  • the object of the invention is to provide a simple as possible and at the same time robust rotating electrical machine with a rotor position sensor.
  • a rotary electric machine having a rotor with a rotor core stack arranged on a rotor shaft.
  • the rotor has at least one winding head cover that terminates the rotor core in the axial direction of the rotor shaft, the winding head cover having an inner side and an outer side.
  • On the outside of the winding head cover a sensor track of a sensor is arranged.
  • the rotor laminated core preferably has a field winding.
  • This rotating electrical machine has relatively few components, since no separate encoder wheel is provided for the sensor. Rather, the sensor track is applied to the end winding cover itself, which is already present in such machines with excitation windings and possibly cast rotor grooves, the sensor track.
  • the sensor track is arranged on an end face of the end winding cover which terminates the rotor core in the axial direction. This embodiment is suitable if a sensor element which reads the sensor track in the axial direction is to be provided.
  • the sensor track is arranged on a side surface of the winding head cover which terminates the rotor core in the radial direction.
  • This Guide shape is suitable when a sensor track is to be provided in the radial direction reading sensor element.
  • the sensor track is applied by the cold gas injection method.
  • the coating material in powder form is applied to a substrate at high speed.
  • the powder particles are thereby accelerated to such a high speed that they form a dense and firmly adhering layer upon impact with the substrate even without prior melting or melting.
  • Various materials are suitable for the sensor track applied by the cold gas injection method.
  • it may comprise a material selected from the group consisting of copper, aluminum and steel.
  • the sensor track is impressed during a deep drawing process. If the winding head cover is produced by deep-drawing, the sensor track can be manufactured simultaneously without much additional effort. For this purpose, the contour of the sensor track is impressed on the outside of the winding head cover.
  • the sensor track is thus formed of the same material as the winding head cover and integrally with the winding head cover.
  • the winding head cover comprises an alloy, wherein the alloy contains iron, chromium and nickel, wherein chromium is contained in the alloy at a weight percent between 18 and 19 (namely 18% to 19%) and nickel in the alloy at one weight percent between 12 and 13 (ie 12% to 13%).
  • winding head cover comprises a material that is substantially the alloy composition
  • Silicon Si with a weight percent e between 0 and 0.6
  • the material can have production-typical impurities with other substances.
  • this material Compared with known stainless steels, for example steels 1.4301 or 1.4303 according to European Standard EN 10020, this material has a particularly high proportion of chromium and nickel. It has been shown that workpieces made of this steel remain unmagnetizable even after forming, punching or cutting. Eddy current losses are thus reduced. This steel is therefore due to its strength and its
  • Non-magnetisability especially suitable for winding head cover.
  • Such a rotary electric machine is also suitable for high speeds of 10,000 revolutions per minute and more.
  • the rotating electric machine is designed as an electric motor. It can also be used as a generator be configured, for example, as a starter generator, or be operable both as a motor and as a generator.
  • Such electric motors are suitable for use in a motor vehicle. They can be used both as drive in the drive fully integrated drive motors, for example as wheel or axle motors, as well as, for example, as a starter generators. According to one aspect of the invention, therefore, a motor vehicle is specified which has the described electric motor.
  • the motor vehicle can be designed as an electric or hybrid vehicle.
  • a method of manufacturing a rotary electric machine comprising:
  • a winding head cover which is suitable to complete the rotor core in the axial direction, and having an inside and an outside;
  • the application of the sensor track can be carried out in particular in the cold gas injection method. It is also conceivable to apply the sensor track on the outside of the winding head cover in a different way.
  • the sensor track made of aluminum, stainless steel or copper or alloys thereof can be prefabricated and connected by means of a connection method such as spot welding, friction welding, riveting, screwing, caulking or gluing with the winding head cover.
  • a connection method such as spot welding, friction welding, riveting, screwing, caulking or gluing with the winding head cover.
  • winding head cover in the deep-drawing process, wherein the winding head cover is adapted to complete the rotor core in the axial direction, and wherein the winding head cover has a rotor laminated core in the axial direction final face;
  • Figure 1 shows schematically a section through a part of a
  • Figure 2 shows schematically a perspective view of
  • Figure 3 shows schematically a section through a part of a
  • FIG. 4 schematically shows a section through part of a
  • Winding head cover according to a second embodiment of the invention.
  • FIG. 1 shows a section through part of a rotor 1 of a rotating electrical machine. The stator is not shown.
  • the rotating electrical machine is designed as a separately excited synchronous machine.
  • Your rotor 1 has a rotor core 2 with a field winding 3.
  • the excitation winding 3 is housed in not shown grooves of the rotor core 2, the groove interior may otherwise be potted with a potting compound or a impregnating resin.
  • a winding head cover 4 is provided in the area of the winding heads of the field winding 3. This surrounds one end of the rotor laminated core 2 and the winding heads of the field winding 3 and has a central opening for the passage of the rotor shaft 7.
  • the winding head cover 4 closes off the rotor core 2 in the direction indicated by the arrow 6 axial direction. It has a rotor core 2 facing the inner side 11 and one of the
  • Rotor laminated core 2 facing away from outside 15.
  • the outer side 15 is subdivided into an end face 5 terminating the rotor laminated core 2 in the axial direction and into a lateral surface 12 which laterally surrounds the rotor core 2 and thus ends in the radial direction.
  • FIG 2 shows a perspective view of the rotor 1 according to Figure 1.
  • the rotor shaft 7 is shown, with which the rotor core 2 is rotatably connected and which is rotatably mounted on not shown housing parts of the electric machine.
  • FIG. 2 shows a rotor position sensor 13 with a sensor element 9.
  • the sensor element 9 is a on the End face 5 of the winding head cover 4 arranged sensor track 8 in the axial direction, which is indicated by the arrow 6, opposite.
  • Figure 3 shows a part of a winding cover 4 with the sensor track 8 according to a first embodiment in section.
  • the sensor track 8 is applied in the cold gas injection method on the end face 5 and consists of copper. It is also possible to use aluminum or steel or copper or aluminum alloys for the sensor track.
  • the winding head cover 4 is made of an unmagnetizable steel having the alloy composition Fe radical Cr a Ni b Mn c C d Si e P f S g N h , in which a, b, c, d, e, f, g and h are given in weight percent are and 18 ⁇ a ⁇ 19; 12 ⁇ b ⁇ 13; 0 ⁇ c ⁇ 1.4; 0 ⁇ d ⁇ 0, 055; 0 ⁇ e ⁇ 0.6; 0 ⁇ f ⁇ 0.04; 0 ⁇ g ⁇ 0.008 and 0 ⁇ h ⁇ 0.1.
  • Figure 4 shows a part of a winding head cover 4 with the sensor track 8 according to a second embodiment in section.
  • the sensor track 8 has been stamped from the inside 11 during the production of the winding head cover 4 in the deep-drawing process.
  • the winding head cover 4 and the sensor track 8 made of the same material and are integrally formed. Due to the deep-drawing process, the sensor track 8 is stamped on the outside 15 of the winding head cover 4.
  • winding head cover 4 in the deep drawing process, wherein the winding head cover 4 is suitable to complete the rotor core 2 in the axial direction, and wherein the winding head cover 4 has a rotor core 2 in the axial direction final end face 5;

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Synchronous Machinery (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

Machine électrique tournante, comprenant : - un rotor (1) doté d'un paquet de tôles rotoriques (2) monté sur un arbre rotorique (7) ; - le rotor (1) présentant au moins un couvre-enroulement (4) terminant le paquet de tôles rotoriques (2) dans la direction axiale de l'arbre rotorique (7), - le couvre-enroulement (4) présentant une face externe (15) ; - une piste (8) destinée à un capteur (13) étant disposée sur la face externe (15) du couvre-enroulement (4).
EP13706265.9A 2012-02-28 2013-02-26 Machine électrique tournante Active EP2820745B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202012002027U DE202012002027U1 (de) 2012-02-28 2012-02-28 Rotierende elektrische Maschine
PCT/EP2013/053802 WO2013127783A1 (fr) 2012-02-28 2013-02-26 Machine électrique tournante

Publications (2)

Publication Number Publication Date
EP2820745A1 true EP2820745A1 (fr) 2015-01-07
EP2820745B1 EP2820745B1 (fr) 2016-08-03

Family

ID=45936192

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13706265.9A Active EP2820745B1 (fr) 2012-02-28 2013-02-26 Machine électrique tournante

Country Status (5)

Country Link
US (1) US20150097461A1 (fr)
EP (1) EP2820745B1 (fr)
CN (1) CN104205578B (fr)
DE (1) DE202012002027U1 (fr)
WO (1) WO2013127783A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015216233A1 (de) 2015-08-25 2017-03-02 Volkswagen Aktiengesellschaft Rotorlagesystem mit in einer Rotorwelle integrierter Geberkontur
GB201520343D0 (en) * 2015-11-18 2015-12-30 Trw Ltd A position sensor assembly
DE102017214776A1 (de) 2017-08-23 2018-04-26 Continental Automotive Gmbh Verfahren zum Fertigen eines Rotors für eine elektrische Maschine mit berührungslosem Leistungsübertragungssystem sowie Rotor, elektrische Maschine und Kraftfahrzeug
DE102017214766B4 (de) 2017-08-23 2023-02-02 Vitesco Technologies GmbH Elektrische Maschine mit einem Leistungsübertragungssystem zum Erzeugen eines Stroms in einer Erregerwicklung eines Rotors der elektrischen Maschine und Kraftfahrzeug
DE102020203273A1 (de) * 2020-03-13 2021-09-16 Robert Bosch Gesellschaft mit beschränkter Haftung Elektrisch ansteuerbares Aggregat

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DE2253048B2 (de) * 1971-11-01 1980-09-18 Allied Chemical Corp., Morristown, N.J. (V.St.A.) Thermoplastischer Formling und Verfahren zu dessen Herstellung
US4075522A (en) * 1976-08-16 1978-02-21 General Motors Corporation Self clamping armature casing for an electric motor driven fluid pump
US4086519A (en) * 1977-02-25 1978-04-25 Electro-Craft Corporation Hall effect shaft angle position encoder
US4758755A (en) * 1987-03-24 1988-07-19 Emerson Electric Co. Removable winding cover for unit bearing motor
DE3808311A1 (de) * 1988-03-12 1989-09-21 Frankl & Kirchner Rotor fuer eine permanent-magnetisch erregte elektrische maschine
US5168202A (en) * 1991-08-30 1992-12-01 Platt Saco Lowell Corporation Microprocessor control of electric motors
EP0601228B1 (fr) * 1992-12-08 1994-10-19 Siemens Aktiengesellschaft Entraînement à moteur électrique
DE4303480A1 (de) * 1993-02-06 1994-08-11 Licentia Gmbh Elektromotor, insbesondere ein umrichtergespeister Asynchronmotor zum Antrieb von Kraftfahrzeugen
US20020073982A1 (en) * 2000-12-16 2002-06-20 Shaikh Furqan Zafar Gas-dynamic cold spray lining for aluminum engine block cylinders
DE102005062865A1 (de) 2005-12-29 2007-07-05 Robert Bosch Gmbh Rotor, sowie elektrische Maschine, beinhaltend einen solchen
US20070159017A1 (en) * 2006-01-11 2007-07-12 Martin Jerry L Explosion-proof motor with integrated sensor/lead housing
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CN101247062B (zh) * 2007-02-16 2012-04-04 三菱电机株式会社 旋转电机
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EP2113988A1 (fr) * 2008-05-01 2009-11-04 Honeywell International Inc. Conception de rotor de générateur haute vitesse incorporant des anneaux d'équilibrage avec amortissement positive
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Also Published As

Publication number Publication date
DE202012002027U1 (de) 2012-03-12
WO2013127783A1 (fr) 2013-09-06
CN104205578B (zh) 2017-02-22
US20150097461A1 (en) 2015-04-09
CN104205578A (zh) 2014-12-10
EP2820745B1 (fr) 2016-08-03

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